West Sayville, New York, United States [CDP]; population was 4,680 in 1990; housing units was 1,884 in 1990; location is 40°44'N 73°6'W; land area is 1.86 square miles (1,188 acres); water area is 0.01 square miles (4 acres); FIPS code is 80885 [SourceCBP]